Beam-induced damage to the Tevatron components and what has been done about it

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A beam-induced damage to the Tevatron collimators happened in December 2003 was induced by a failure in the CDF Roman Pot detector positioning during the collider run. Possible scenarios of this failure resulted in an excessive halo generation and superconducting magnet quench have been studied via realistic simulations using the STRUCT and MARS14 codes. It is shown that the interaction of a misbehaved proton beam with the collimators result in a rapid local heating and a possible damage. A detailed consideration is given to the ablation process for the collimator material taking place in high vacuum. It is shown that ... continued below

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5 pages

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Mokhov, N.V.; Czarapata, P.C.; Drozhdin, A.I.; Still, D.A.; /Fermilab; Samulyak, R.V. et al. November 1, 2006.

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A beam-induced damage to the Tevatron collimators happened in December 2003 was induced by a failure in the CDF Roman Pot detector positioning during the collider run. Possible scenarios of this failure resulted in an excessive halo generation and superconducting magnet quench have been studied via realistic simulations using the STRUCT and MARS14 codes. It is shown that the interaction of a misbehaved proton beam with the collimators result in a rapid local heating and a possible damage. A detailed consideration is given to the ablation process for the collimator material taking place in high vacuum. It is shown that ablation of tungsten (primary collimator) and stainless steel (secondary collimator) jaws results in creation of a groove in the jaw surface as was observed after the December's accident. The actions undertaken to avoid such an accident in future are described in detail.

Physical Description

5 pages

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  • Presented at 39th ICFA Advanced Beam Dynamics Workshop on High Intensity High Bightness Hadron Beams 2006 (HB2006), Tsukuba, Japan, 29 May - 2 Jun 2006

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  • Report No.: FERMILAB-CONF-06-415-AD
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 897246
  • Archival Resource Key: ark:/67531/metadc879456

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • November 1, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 9, 2016, 7:48 p.m.

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Mokhov, N.V.; Czarapata, P.C.; Drozhdin, A.I.; Still, D.A.; /Fermilab; Samulyak, R.V. et al. Beam-induced damage to the Tevatron components and what has been done about it, article, November 1, 2006; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc879456/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.